The calculated distance (air line) between Duisburg and Sainghin-en-Weppes is approximately 179 miles respectively 287 kilometers.
By car or train, the actual journey to Sainghin-en-Weppes is certainly longer, as only the direct route (as the crow flies) between Duisburg and Sainghin-en-Weppes has been calculated here.
Air line (approximately)
287 kilometers
155 nautical miles